From 30e13e6a34989bf9eb3cfebea3c667e962c5f586 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sun, 7 Dec 2025 10:43:25 +0200
Subject: add openbsd routing rules

---
 f3s/prometheus/openbsd-recording-rules.yaml | 36 +++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 f3s/prometheus/openbsd-recording-rules.yaml

diff --git a/f3s/prometheus/openbsd-recording-rules.yaml b/f3s/prometheus/openbsd-recording-rules.yaml
new file mode 100644
index 0000000..0701a4f
--- /dev/null
+++ b/f3s/prometheus/openbsd-recording-rules.yaml
@@ -0,0 +1,36 @@
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: openbsd-memory-rules
+  namespace: monitoring
+  labels:
+    release: prometheus
+spec:
+  groups:
+    # OpenBSD memory metrics mapped to Linux-compatible names
+    - name: openbsd-memory
+      rules:
+        # Synthetic MemTotal for OpenBSD (maps to size_bytes)
+        - record: node_memory_MemTotal_bytes
+          expr: node_memory_size_bytes{os="openbsd"}
+          labels:
+            os: openbsd
+
+        # Synthetic MemAvailable for OpenBSD
+        # Available = free + inactive + cache (approximation)
+        - record: node_memory_MemAvailable_bytes
+          expr: node_memory_free_bytes{os="openbsd"} + node_memory_inactive_bytes{os="openbsd"} + node_memory_cache_bytes{os="openbsd"}
+          labels:
+            os: openbsd
+
+        # Synthetic MemFree for OpenBSD
+        - record: node_memory_MemFree_bytes
+          expr: node_memory_free_bytes{os="openbsd"}
+          labels:
+            os: openbsd
+
+        # Synthetic Cached for OpenBSD
+        - record: node_memory_Cached_bytes
+          expr: node_memory_cache_bytes{os="openbsd"}
+          labels:
+            os: openbsd
-- 
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